Lock



E. N. JACOBI Loox Dec. 3, 1940.

Filed Nov. 9, 1959 4 Sheets-Sheet l 'dammi/W5 Edward N ambi Dec. 3,1940. Ff N JACOB, 2,223,615

LOCK

Filed NOV. 9, 1939 4 Sheets-Sheet 2 MmfL/a/j Edward N Jambz E. N. JAcoBlLOCK Dec. 3, 1940.

4 Sheets-Sheet 3 Filed Nov. 9, 1959 Dec. 3, 1940. E; N JACOB, ;42,223,615

LOCK

Filed NOV. 9, 1939. 4 Sheets-Sheet 4 Patented Dec. 3, 17940` UNITEDSTATES; BATENT-f-OFFICE "72,223,6 1f5ff`fA y f LOCK' Briggs & Stratton'Corporation, 'Milwaukee'` Wis.`,acorpcration of Delaware ApplicationNovember 9, 1939, Serial No.303,515

19 Claims. (Ciro-45,5)

This invention relates to locks, and refers particularly to key operatedcylinder locks of the type used on automobiles in door handles and otherexposed locations.

i inder and its casing. i

The present invention therefore has as one of its objects to provide acover for locks'of rthe character described which not only closes theentrance to the keyway, but also covers the joint between the cylinderand its casing.

To be effective against a strong jet of water as projected from a hoseduring washing of the automobile, such covers must seal tightly allaround the edge and the mounting for the cover must not break thecontinuity of the seatv at any point.

This invention achieves t the lock housing or casing.

his objective through the provision of novel means'for-mounting thecover, al1 parts of which lieinside an outer peripheral edge portionwhich engages aseat on Another object of this invention resides in theprovision of improved means for holding the cover closed with a strongspring,y tension acting tion.

' on the lock to pull the same doWn-toclosed posi- A further object ofthis inventionis to provide a cover for locks of the character describedwhich is so designed that it `may be yieldingly held in either closed oropen position.

With the above and other objects ingview which will appear as thedescription proceeds, this invention resides in the novel construction,combination and arrangement of parts substantially as hereinafterdescribed, and more particularly dened by the appended claims, it beingunderstood that `such changes inthe precise embodiment ofthehereindisclosed. invention maybe made as come within the scopeof theclaims.

The accompanying drawingsillustrate several complete examples of thephysical embodiment of the invention constructed in accordance with the4best modes so far devised for the4 practical which:

esI thereof, l and in Figure 1 is-a sectional View through an automobiledoor handle showing a lock equipped with the cover of this invention,mounted therein;

yFigure 2 is a view similar toFigure f1, but with the cover in its openposition;

Figure 3 is a perspective View of the cover, the lock cylinder, and thelink by which the cover is connected to the lock cylinder;

YFigure 4 is a view similar to Figure 1, showing al modified embodimentof the invention;

` Figure`5 is a sectional View taken through Figure 4y on the plane ofthe line 5 5;

Figure 6 is a view similar to Figure 4, but showing the cover in itsopen position;

'A Figure 7 is a perspective View showing part of the door handleandpart of the cover mounting means of that form of the invention shown linFigures 4, 5 and 6;

Figure 8 is a view similar to Figure 1, illustrating another modiedembodiment of the invention; A l

Figure 9 is a cross sectional View through Figure 8 on the plane of theline 9 3;

Figure 10 is a sectional View through Figure 8 on the plane of the lineIU-l 0; and

Figure V11 is a perspective View of the cylinder and part of the coversupporting structure employed in that form of the invention shown inFigures 8, 9 and 10.

Referring now particularly tothe accompanying drawings in which likenumerals indicate like parts throughout the several Views, the numeral 5designates the supporting member or housing in which the lock of thisinvention is mounted. In the present instance, this supporting member isin the form offa door handle having a bore 6 to receive the casing 1 ofthe lock. The casing is secured the handle in any suitable manner and isbored to receive the rotatable lock cylinder 8. A v

The cylinder 8 vis of the type illustrated in PatentlNo.-1,965,336issued to John W. FitzGerald yJuly 3, 1934, in which a locking bar 9 isprojected to'an operative position engagingv in a groove formed inthefcasing, by key operable tumblers (not shown). The tumblers areretractible upon the insertion of a proper key I0 to a position at whichthe locking bar 9 is drawn into the conlines of Athe cylinder to freethe same forrotation in the vcustomary manner. Rotation s cf thevcylinder `is transmitted through a stem Il extending rearwardlytherefrom to the door latching mechanism.` (not shown).

In the embodiment of the invention illustrated in Figures 1 to 3,inclusive, the casing terminates a distance inwardly of the mouth of thebore 6 and the cylinder has an enlarged head I2 re ceived in the bore 6outwardly of the casing. The space between the front of the head I2 andthe mouth of the bore accommodates the mechanism by which a coverk I 3is mounted.

The cover I3 in this instance is an unbroken disc having a peripheraledge portion I4 which engages a seat I5 at the' rim of the bore 6. Asclearly shown in Figures 1 and 2, this seat and the contactingedge'portion of the cover slant downwardly and outwardly away from theperipheral edge or rim of the bore to direct liquid or foreign matterawayfrom the mouth of the bore. Ordinarily though,'fthe contact betweenthe cover and its seat is sufficiently tight to preclude the passage ofwater or foreign matter 'into' the bore, so that it is only whensomeparticle of dirt gets under the cover to hold the same from seatingproperly that the slant of the con--V tacting surfaces on thecover andsupporting member is important.

TheV cover is hingedly mounted on the rotatable lock cylinder by ,meansof a lever or linkl, preferably in the form of a `die casting best shownin Figure 3. This link or lever has two spaced parallelA arms rI'Ilbetween which a lug I8 on the head of the cylinder and a lug I9 on theinner face Vof, the4 coverl are received. These lugs are opposite oneanother across the center line` with relation to the link `or levermember I6 and are pivotally joined to the arms I'I by pins 20 and 2|,respectively. v

Between the Apivotal connections provided by thepnsr 2o and 2I, ther.link or lever member I6 is pivotally attached, as. at 22, to the arms23 rof la yoke member which slides4 on the stem II of the cylinder.These arms '23 slide in grooves 24 `and project through openings 25V inthe cylinderihead to extend into recesses 26 in the inner faces of thearms I'I on the lever member.

A coil spring 2'! conned between the inner or rear end of the`lockvcylinder and the closed medial portion of the yoke memberyieldingly urges the yoke membenrearwardly to draw the lever mem'benandconsequently the cover, toward the cylinder.l In'this way, a1 strongspring tension is applied to the coverto hold the same firmly engagedwith its seat. 4

Inr opening the cover toexpose the mouth of the keyWay,'-an,outwardforce applied on its edge opposite vthe hinge ,-pin V2I causes the coveredge toride over the rim of the bore 6, swinging the lever-'member I3outwardly, After a predeterminedmotion ofthe cover in this manner, itsedge lportion adjacent to its lug I9 swings beyond dead center to itsposition'showngin Figure 2, the arms of` the lever memberII being cutaway as at 28 to accommodate this edge portion of the cover.

Vihen the parts are moved to this position, the spring 2'I acts toyieldingly -hold the cover open, and in-this' position, an opening 29through the lever ,member affords jaccess to the keyway to permitV theinsertion of the key. In reclosing the lcover,.it is only necessary toflip the same beyond Vwith the cylinder, but is mounted from the 'sup`porting member orA door handle. In vthis instance, the cover 30 ishingedly mounted from the handle by a` link V3| pivotally connected to aVlug'32 Von the'inner'face of the cover andjpivotally "connected .withthe vvvhandle by having fa portion thereof conned in the bottom of acounterbore 33 by a lug 34 and the head 35 of the cylinder.

Two coil springs 36 are used to draw the-cover to its closed position.These springs encircle pins 3l pivotally connected to the cover at theirhinged connection with the link 3| and slidably projecting through afixed plate 38 which serves as a spring abutment. This plate is held inposition by beingset in a notch 39 in the mouth of thebore of the handlewhere it is heldby the lock casing.

The springs 36, as stated, are coiled about the pins 3'I and have oneend bearing against the inner face of the plate 38 and their oppositeends connected to the rear end-s of the pins, Conse-v quently, thespringsr are maintained in compres# .sion and to accommodate the same,the handle-is provided V'with a cavity 40 in which the springs Asrbefore,.the innerv face of the cover has a l Alug :4L This lug ispivotally connected to a slide member 42 slida-ble ina longitudinalgroove 43formed in the side of the lock cylinder. This slide `member 42is vbox-like and has arear wall 44 to engage the rear ends of twocompression springsv 45, the front ends of which abut a Wall 46partially closing the front of the groove 43.k Inthis manner, thecompression of the springs .45 draws the slide member longitudinallyrear- Wardly'to maintain V.the cover in its closed position. I

As the cover `is opened, it fulcrums about its peripheral edge portionadjacent to the hinged connection with the `slide member, which isformed with la curved neck 41 to accommodate the `edge 'of the cover andpermit the same to swing .beyond dead center to a position Where .thetensionof thesprin'gs holds the same in its open position.

From the `foregoing description taken in connection with theaccompanying drawings, itl Will 4be readily apparent that this inventionprovides a substantial improvementincovers of-v key opera'ble lockcylinders in that it not only .covers the lentrance .to thekeyvvay .butalso precludes the vadmissionot-water and dirt tothe joint'lbetween Lthecylinder? and its fcasing.v

What I''cl'aim 4as my 'inventionisz d 1. In a lock of the characterdescribed: asu

lportingmember having a .boreyJa look cylinder vmounted therein; acover-:for.thelouteriendof the cylinder, saidc'over-.being large enoughto extend out beyond the junction .between 'thecylinderand -thesupporting `rmem-ber and' .engaging 'the supporting member allaro'und.the mouth of its bore ing said cover 'to swing.' atwise.towardpandifrom 'the outer en'd of vIthe r.cylinder .with :thecoveriful- -crumingabout .the .contact of its grim W'ith -the frontJface .of the supportingmember; and means for .yieldinglyldrawing vthevCover .down onto `'the supportingmember.

i2. Inrconibinationwitli a'lo'ck cylinder and'its bored housing: facover'for theirontof the lock cylinder; a'seat forithe'cover onjthevhousing en- Icirclingtheboremean's lying Wholly .withinltheVconfines Vof 1said seatfor :hingedlyfmountingthe cover to swingflatwise ktoward and fromjthe '75 front of the lockcylinder with thevcover fulcruming aboutthe` contact of its Arim with the front face vofthe bored housing; and means yieldingly urging the cover into iirmengagement with the seat l l l 3. 'In combination: a supportingmemberhaving abore; a lock cylinder mountedin the bore; a cover for thefront of the lock cylinder larger than the mouth of the bore andengageable with the front ofthe supporting member; a hingedconnection-between the cover andI thev cylinder; and means yieldinglydrawing the cover into rm engagement with the-front of the supportingmember.y *Y

4. In combination: a'supporting-fmember having a bore; a lock cylindermounted therein; a cover for the front end of the cylinder; a cover seaton the supporting member encircling the mouth of the bore and with whichsaid cover is engageable with an uninterrupted contact to guardV againstadmission of extraneous matter and water to the joint between thecylinder and the supporting member; a hinged connection between thecover and the lock'cylinder; and spring means acting on said coverthrough the hinged mounted therein; a cover for the front end of thecylinder of a size large enoug'hto extend beyond the rim of the bore;a'hinged mounting for the cover including a member slidablelongitudinally with respect to the cylinder and hingedly connected withthe cover inwardly'of its `peripheral edge portion whereby in openingthe cover,

the cover fulcrums about thev contact of its rim with the front face ofthe supportingl member and the rim of the bore therein; a compressionspring arranged with its axis substantially parallel with the axis ofthe cylinder and inwardly of the outer end of the cylinde-r; and aconnectionjbetween the spring and the cover whereby said spring at alltimes yieldingly draws the cover toward the 'supporting member.

6. In a lock of the character described: a supporting member having abore; al'ock cylinder mounted therein; a cover for the front end `of thecylinder large enough to extend beyond the rim ofthe bore so as to coverthe junction between the cylinder and the supporting member; meanshingedly mounting the cover for flat-wise swinging movement from aclosed position outwardly away from the supporting member to an openposition; a spring; and means connecting the cover with the springinsuch a manner that the spring yieldingly holds the cover either in itsclosed or open position.

'7. In a lock of the character described: a supporting member having abore; a lock cylinder in the bore; a cover for the front end of the lockcylinder large enough to extend beyond the periphery of the cylinder to'cover the joint between it and the supporting member; a lug on the innerface of the cover extending into the mouth of the bore, said lug beingspaced from the marginal edge portion of the cover so 'as to leave saidmarginal edge portion unobstructed for uninterrupted engagement with thesupporting member; means connected with the lug for hingedly mountingthe cover; and means acting on said cover through the lug for yieldinglyholding the cover in its closed position.

8. In a lock of the character described: a supporting member having abore; a lock cylinder mounted therein; a cover for the front of thelock' cylinder large enough to extend beyond the periphery of thecylinder and cover the joint between it andthe supporting member; acover seat encircling the mouth of the bore; a lever pivotallyconnectedwith `the cover inside its portion` which engages the seat; meansinwardly of theA mouth of the bore for pivotally mounting said lever ata distance from its connection with the cover; and spring means actingon the cover and tending to hold the same in its closed position.

' 9; In alock of the character described: a supporting member having abore; a lock cylinder mounted therein; a cover for the front of the lockcylinder; a cover seat on the supporting member encircling the mouth ofthe bore and withl which the cover is engageable with uninterruptedcontact; a lever pivotally connected with the cover to one side of thelongitudinal axis'of the lock and pivotally connected with the lockcylinder at the opposite side of said axis, said lever and-its pivotalconnections enabling the cover to be swung to and from its closed.position; and spring means connected with the lever between its pivotalconnections with the cover and cylinder yieldingly urging the levertoward the cylinder to draw the cover into firm engagement with itsseat.

10. In a lock of the character described: a member having a bore; a lockcylinder mounted therein; a cover for the front end of the cylinder; 'acover seat on said member encircling the mouth of the bore and withwhich the cover is engageable with `an uninterrupted contact; a leverhaving a pivotal connection with the cover to one side of the covercenter but inwardly of its portion which engages the seat and having apivotal connection with the cylinder at the opposite side of the centerof the lock when the cover is closed; a yoke engaged over an inner endportion of the cylinder and having arms projecting forwardly; aconnection betweenr said arms and the lever; and a spring yieldinglyurging -the'yoke inwardly to hold the cover yieldingly down on its seat.

1l. In a lock of the character described: a supporting member having abore; a cylinder mounted therein; a cover for the front of the cylinderlarge enough to extend beyond the junction of the cylinder and itssupporting member; a lever of `a size to t into the mouth of the bore; apivotal connection between the lever and the cover; a pivotal connectionbetween the lever and the cylinder; said lever and the location of itsconnections with the cylinder and cover enabling the cover to be swungfrom a closed position at which the inner face of the cover engages thesupporting member, to an open position at which the opposite front faceof the cover engages the supporting member; and a spring connected withthe lever medially of its pivoted connections with the cylinder andcover and acting inwardly thereon to yieldingly hold the y front of thecylinder to closeV the keyway; a stem on the'inner end of the cylinder;a yoke slidable on said stem and having arms extending forwardly beyondthe front end of` the cylinder;` means connecting the arms with thecover; and a spring confined between the yoke and the inner end of thecylinder for yieldingly drawing the cover to its closed position.

14. In a lock of the characterl described: a rotatable cylinder havinglongitudinal grooves at diametrically opposite points in its side walland having a keyway; a cover for the 'front end of the cylinder movableto and from aV closed position disposed over the keyway; a` stemextending from the rear, end of the cylinder; a yoke slidable on thestem and having arms slidable in said longitudinal grooves; meansconnecting said arms with the cover; and a spring confined betweentherear end of the cylinder and the yoke for yieldingly drawing the coverto its closed position.

15. In a lock of the character described: a supporting member having abore; a cylinder mounted therein; a cover having its peripheral edgelportion engageable with the supporting member around the rim of thebore; a lug on the inner face of the cover projecting into the bore; alug on the front face of the cylinder; a lever member having pivotalconnections with said lugs; a stem projecting from the rear end of thecylinder; a yoke slidable on the stem with its arms projecting forwardlybeyond the front face of the cylinder; means pivotally connecting saidlever member withthe arms of the yoke; and a spring conned between therear end of the cylinder and said yoke tending to at all times draw thelever member and consequently the cover toward the cylinder.

16. In a lock of the character described: `a supporting member having abore; a lock cylinder mounted therein; a cover engageable with thesupporting member around the rim of the bore; ya lug on the inner faceof the cover inwardly -of its edge portion which engages said rim; alink pivotally connected with the lug and embracing the front end of thecylinder; a pivotal connection between said link and the supportingmember diametrically opposite the connection of the link with the cover;and spring means anchored with relation to the supporting member andconnected with the cover for vyieldingly drawing the cover against thesupporting member.

17. In a lock of the character described: a lock cylinder having akeyway; a cover for the front end of the cylinder to close the keyway;said cylinder also having an open groove in its side; an abutment in thebottom of the groove near the front end of the cylinder; a memberslidable in lsaid groove and having an abutment spaced from the abutmentin the groove; a spring confined between said abutmentsvto yieldinglydraw said member longitudinally toward the rear end of the cylinder; anda pivotal connection between the coverand said member.

18. In a lock of the character described: a`

supporting member having a bore; a lock cylinder mounted therein andhaving an open longitudinal groove in its side wall; a cover to closethe mouth of the bore and engage the rim of n the bore with anuninterrupted contact; a member slidable longitudinally in said groove;abutments in the groove, one fixed with relation to the cylinder and theother with relation to the slidable member; a spring conned between saidabutments to yieldingly urge the slidable member inwardly; and a pivotalconnection between said slidable member and the cover.

19. In a lock of the character described: a.`

supporting member having a bore; a lockcylinder rotatable therein; acover for the cylinder of a size large Venough to extend beyond the rimof the bore and contact the front of the supporting member; common meansfor hingedly mounting the cover from the cylinder and yieldy inglydrawing the cover down onto the supporting member, said means includinga member slidable longitudinally with respect to the cyl-v

